upgrade nan to latest
upgrade nan to latest

tomhughes/node-sqlite3,mapbox/node-sqlite3,mapbox/node-sqlite3,tomhughes/node-sqlite3,tomhughes/node-sqlite3,tomhughes/node-sqlite3,mapbox/node-sqlite3,mapbox/node-sqlite3,tomhughes/node-sqlite3,mapbox/node-sqlite3,mapbox/node-sqlite3,tomhughes/node-sqlite3